11.1 go语言的goroutine

11.1.1 go轻松开启100万个协程

package main
import (
    "fmt"
    "sync"
    "time"
)
var wx sync.WaitGroup
func main() {
    for i:=0; i < 1000000; i++ {
        wx.Add(1)
        go func(i int){
            defer wx.Done()
            for {
                fmt.Println(i)
                time.Sleep(time.Second*1)
            }
        }(i)
    }
    wx.Wait()
}

11.1.2 python起送开启100万个协程

import asyncio
import time
async def say_after(index):
    while 1:
        await asyncio.sleep(1)
        print(index)
tasks = []
async def main():
    print(f"started at {time.strftime('%X')}")
    for i in range(1000000):
        tasks.append(asyncio.create_task(say_after(i)))
        # await say_after(2, 'world')
    await asyncio.gather(*tasks)
asyncio.run(main())